Apparatus for turning of leaves of music



March 15, 1932. 1.. B. KLAussEN APPARATUS FOR TURNING OF LEAVES OF'HUSIC Filed Jan. 11, 1929 3 Sheets-Sheet 1 1 l I I t l l l' r.

March 1s, 1932. L, B. KLAUSSEN 1,849,459

APPARATUS FOR TURNING OF LEAVES 0F MUSIC Filed Jan. ll. 1929 5 Sheets-Sheet 2 --M- O\ 5o /q/aussen i /fvve/vrak March l5, 1932. L. a. KLAUssEN APPARATUS FOR TURNING 0F LEAVES 0F`PIUSIG Filed Jan. ll, 1929 3 Sheets-Sheet 3 Patented Mar. 15, 1932 seres LEIF BJRNE KLAUSSEN, OIF MINBE, NEAR BERGEN, NOB-WAY APPARATUS YFOR TURNING OF LEAVES OF MUSIC Application filed January 11, 1929, Serial No. 331,865, and in Norway October 4, 1927.

The present invention relates to an apparatus for turning of leaves of music, adapted to be secured to the music stand of a piano or the like or to a usual music rest.

The invention is by way of example illustrated in the annexed drawings where F ig. 1 is a front view of the device,

Fig. 2 is a plan view thereof,

Fig. 3 diagrammatically illustrates the wire arrangement, and Fig. 4 is an end view to a music stand.

At the drawings 1 designates the lower plate and 2 the top plate of the device, which l5 plates are interconnected and held at a suitable distance from each other by means of connecting members 3, the said plates and members constituting the main supporting means of the apparatus. v Between said plates 1 and 2 are rotatably arranged a top disc and a lower disc 4, 4, one of which may be provided with an arcuated slot- 5 (Fig. 3) which cooperates with a suitable abutment pin' 5a to limit the turning movement of the discs.

To the discs 4 and eccentrically to the aXis thereof are pivotally secured the music leaf supporting means in the form of two arms 6, 7, the outer ends of which carry clamping carriers or transfer members 8, 9 for the music leaves A to be turned. The inner ends of said arms 6, 7 are U-shaped and one of the prongs thereof passes over and the other under the upper and the lower discs 4, 4 respectively, the cross portions 10 and 11 which connect the prongs being adapted to cooperate with the actuating mechanism for the arms, as will be described more fully below.

Between the discs 4, 4 are arranged two string sheaves 14 and 15 mounted one over the other on studs 12 and 13 respectively and each carrying an arcuated spring 16 and 17 respectively. The outer, free ends of the springs 16 and 17 are bent to form hooks 18 and 19 respectively, which coactvwith the cross portions 10 and 11 on the arms 6 and 7 respectively when the latter are swung, as will be described below.

At each end of the apparatus is provided a member 21 which is adjustable by means of of the device secured a threaded bolt 20 and to which is secured a resilient spring or rubber member 22, to which is again secured a wire or line 23. Each of said lines passes over a guiding roller 24 to the sheave 14 (respectively 15), then over" guiding rollers 25, 26 and 27 to the other end of the apparatus, where the line is secured to an impact member 28. Said member 28 may consist of an angle-shaped piece the horizontal part 29 of which is adapted to be6U pressed down by means-of the fingers. Near the end of the line 23 is secured thereto an abutment member 31 which co-operateswith an abutment to limit that movement of the line which is caused by the member 22.

The apparatus is provided with resilient clamps 32 by means of which it may be secured to the music stand 33 of the piano 34 as shown in F ig. 4 whereby the or the like, impact members 28 will be situated directly 70 above the clavier'35, at a suitable distance therefrom. However, the apparatus` may also be adapted to be secured in a similar manner to al usual music rest; the impact members 28 may, if desired, be so arranged 7 that they are adapted to be actuated by means of the elbow, the knee or the foot. In the last case it maybe most suitable to connect the lines 23 with a suitable pedal mechanism Y or the like. i

If the apparatus isA secured to the music stand of a piano and the leaves of music to be turned are secured in the carriers or transfer members 8 and 9 at the arms 6 and 7 respectively, both situated at right in Figs. 8 1 and 2, the operation of the apparatus is as follows: Y 4

The discs 14 and 15 are, due to the tension of the members 22 and the cooperation of 90 the abut-ments 30 and 31, held in a predetermined normal position indicated in Fig. 2, and due to the excentrical mounting of the arms 6, 7 on the discs 4, 4 by means of indiwfidual pivots the cross portions 10 and 11 respectively will be situated at different distances from the axis of the discs 4 when the arms 6 and 7 are swung to the same side (see Fig. 2).

If the leaf secured in the transfer member 9 is to be swungfrom right to the left,

the player presses the right hand impact member 28 down, whereby the disc 14: is turned by the line 23 against the action of the resilient member 22 which at the same time is placed under tension. When the disc 14 is turned'it swings the spring 16, which is pressed past'the cross portionv11 on the Varm 7 until said portion 11 'snaps into the hook 18 on the spring 16. Whennow the impact member 28 is released by the player, the disc 14'turns automatically by the action of the resilient member 22 back to normal position, and the spring 16 when moving back takes with it the arm 7 and accordingly also the leaf'of music in question. rihe shape vand action of the spring 16 is so chosen that when the arm 7 has been swung somewhat past its middle position, that is past a posit-ionfat rightvangles tothe plane of the paper in Fig. 1, the cross portion 11 passes out of the hook 18v and the 'arm continues due to its momentum. Y Y Y Duringk the above describedmovement of the arm 7 the discs 4 are turned somewhat to l. the right so that the arm 6, and accordingly Yits'gcross portion 10, is moved inwardly to the sameradial distance Yfrom the center of i the disc 14C as previously the arm 7 and the cross portionV 11 thereof.V Therefore, if the right hand impact member 28 is again pressed down the saine operations as above described will be repeated Vand the arm 6 and thetrans- ,fer member 8y thereof swung from right to the left. Y Y, Y

The leaves of music may be moved back again in exactly the same manner as above described by actuating the left hand-impact i. i

member 28.` v Y The velocity of the swinging movement fof the arms is controlledby means of the Y adjust the tension fof the member 22.

The apparatus abovedescribed is `adapted to turn two leavesv ofmusic, but it is obvif only illustrating an example. v Having now particularly described and ascertained the natureof my said invention and in what manner the same is to be performed, declare that what I claim is:

2v -y i 1,849,459

of pivotally and eccentrically secured to the disc and provided with a cross pin, an ac-V tuating mechanism for the arm including a rotatably mounted bowed spring the free Vend of which'is shaped as a double hook adapted to engage the pin on the arm when the spring is swung against the arm, an impact memberoperably connected with the actuating mechanism for eEecting swinging movement against' the arm, and a resilient device operably connected .with the impact memberjwhich as the spring is swung against lthe arm'is placed under tension and automati-` cally swings said spring baclr to position, substantially as andlfor' the 'purposes set forth.

2. Apparatus in accordance with claim 1,

-whereina flexible member establishes operabl'e connection between the impact member, the actuating mechanism and the resilient dcvice, and wherein the actuating mechanism also includes a slieave Voperably connected with the-flexible member and having a spring connected thereto. p Y y 3. Apparatus in accordance with claim 1,

the actuating member and the resilient de- `vice, and wherein the r-esilientdevice is insertedv between the end of the flexible-memberand the. support. f

i 4. Apparatus'in accordance with claim'l,

'wherein there are two sets of actuating mechanismsandimpact members and resilient devices areprovided, one set for the movement of the arms in each direction.

, LEIF BJARNE KLAUSSEN.

Vthreaded bolts 20, which may be adjusted to f Y bodim'ent thereof 'here shown and describedf l Y 1. Apparatus for turning leaves of music vincluding a support, a disc'mounted for .lim-

ited turning movementon the support, a leaf supporting arm having thefinner end therewherein a flexible member establishes oper-: 90 Y lable connection between the impact member, 

